Fan controller



FIG. 1 is a top view of the fan controller;

FIG. 2 is a bottom perspective view;

FIG. 3 is a rear view of the fan controller;

FIG. 4 is a right side view;

FIG. 5 is a front view of the fan controller;

FIG. 6 is a left side view;

FIG. 7 is a top view; and,

FIG. 8 is a bottom view.

The broken line depictions form no part of the claimed designs. 

CLAIM The ornamental design for a fan controller, as shown and described. 